Automatic-cut-off gas-burner.



G. B. TRYON.

AUTOMATIC CUT-OFF GAS BURNER.

APPLICATION FILED AUG. 16, 1919.

1,326,550. Patented Dec. 30,1919.

GEORGE B. TRYON, 0F DERBY, CONNECTICUT.

.AUTOI /IATIC-CUT-OFF GAS-BURNER.

Application filed August 16, 1919.

To all whom it may concern:

Be it known that I, GEORGE B. TnYoN, a citizen of the United States, residing at Derby, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Automatic-Gut- Oi? Gas-Burners; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Figure 1 a side View of an automatic cutoii' gas burner constructed in accordance with my invention in the open position.

Fig. 2 a side view of the same.

Fig. 3 an enlarged sectional view of my improved burner shown with the valv in the closed position.

Fig. 4 a similar view showing the valve in the open position.

Fig. 5 a side view illustrating a modified term of my invention.

This invention relates to an improvement in automatic cut-ofi" gas burners particu larly to those which are thermostatic in action, and is an improvement on the invention shown and described in United States Patent No. 1,304,221 granted to me May 20th, 1919.

In my previous patent I employed a tip carrier sliding telescopically in a burner tip with a yoke fixed to the burner tube and carrying expansible arms, which, when expanded, were adapted to hold the tip carrier in its depressed position.

The object of this invention is to mount an expansible member on the tip carrier and provide abutments on the burner tube with which, when expanded, the member on the tip carrier will engage so as to hold it in the depressed position, and the invention consists in the construction hereinafter de scribed and pointed out in the claims.

As in my previous invention, I employ a burner tube 6 similar in construction to an ordinary burner tube and adapted to be socured to the usual gas fixture nipple. The upper end of the tube is slightly reduced in diameter to form an annular valve seat 7. Closely lit-tine: the upper end of the burner tube is a cylindrical tip carrier 8 having a tip 9 mounted in its upper end the tip being formed with the usual burner slot 10. The lower end of the tip carrier is formed Specification of Letters Patent.

Patented Dec. so, rare.

Serial No. 318,021.

with an annular shoulder 11 adapted to bear against the seat 7 so as to form a tight joint therewith. The lower end of the tip carrier 8 is closed by a-plug or otherwise, and abov the plug is aport 13 opening into the tip carrier. Preferably the lower end of the plug stands above the lower end of the tip carrier so as toform a recess 1 1 for the reception of a spring 15 the lower end of which will rest upon the upper end of the nipple, not shown. Mounted upon the tip 8 is an expansible member 16 which may be in the form of a disk, as shown in Figs. 1, 2, 3 and 1 of the drawings formed from comparatively soft metal so as to expand under increasing temperature, and fixed to the up per end of the burner tube 6 is an abutment 17 which, as herein shown, is cup-shaped the internal diameter of which corresponds to the expansibl member 16 so that when the expansible member is passed into the cup and heated so as to become expanded, it will frictionally engage with the abutment so as to hold the tip carrier in a depressed position. Instead of making the expansible member in the form of a disk, and the abutment in the form of a cup, the expansible member may consist of a ring 18 closely fitting and firmly secured to the tip carrier and formed with oppositely'extending arms 19 adapted to engage with abutments 20 formed at the upper ends of a yoke 21 per manently secured to the burner tube 6.

The operation of either construction above referred to is the same, that is to say, to ignite th burner the gas is first turned on and then the tip carrier is depressed so that the expansible member is in line with the abutment. The gas is then ignited and heat from the gas will quickly expand the expansible member so that it will frictionally engage with the abutment with sufficient power to hold the tip carrier in a depressed position. Should th gas be extinguished for any reason, the expansible member will cool and contract so as to be released from the abutment and spring upward so as to shut oil the supply of gas to the tip.

I claim 1. The combination with a burner tube, of a tip carrier mounted in the upper end thereof, the lower end of the tip carrier coacting with the burner tube to close the passage between them, a port in the tip carrier, an expansible member secured to the upper end of the tip carrier, and an abutment secured to and projecting above the burner tube with which the expansible member may engage.

2. The combination with a burner tube, of a tip carrier mounted in the upper end thereof, the lower end of the tip carrier coacting with the burner tube to close the passage between them, a port in the tip carrier, abutments arranged on opposite sides of the burner tube and fixed with relation thereto, and an expansible member fixed to the upper end of the tip carrier and adapted when expanded to firmly engage with the abutment. i

3. The combination with a burner tube, of a tip carrier mounted in the upper end thereof, the lower end of the tip carrier coacting with the burner tube to close the passage between them, a port in the tip carrier, a cup-shaped abutment fixed to the upper end of the burner tip, and a disk-like expansible member fixed to the tip carrier and adapted to pass into the cup-shaped abutment and when expanded firm-1y engage therewith to hold the tip carrier in a de pressed position.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

GEORGE B. TRYON.

Witnesses:

D. J. Wroxnnsnnnr, E. H. KNEEN. 

